JPH0460338A - Wireless sensing method for sensing hot water temperature in bath tub - Google Patents

Abstract

PURPOSE:To detect a bath tub hot water temperature without requiring any electrical wiring work by a method wherein the temperature of returning hot water in a returning pipe of a circulating reheating circuit near the bath tub is detected and then a detected temperature signal is transmitted in a wireless form with an electrical power got through a flowing water in the circulating reheating circuit being applied as a power supply. CONSTITUTION:A thermistor 6 acting as a hot water temperature sensing sensor is disposed at a location in a returning pipe 4a in a circulating reheating circuit near a bath tub 1, an electrical power is generated by the water flowing through the circulating reheating circuit and then an electrical power generating and charging device 10 capable of storing the electrical power is disposed. A transmitting control circuit board 11 with the power generating and charging device 10 being applied as a power supply and a thermistor 6 are connected to each other. A signal from the thermistor 6 is transmitted through a transmitting part 12 to a receiving part stored in the remote controller 8.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention connects the bathtub and a reheating heat exchanger via a circulation reheating circuit, thereby circulating hot water in the bathtub and reheating it. The present invention relates to a method for detecting the temperature of bathtub water in a bathing device that uses a heat exchanger for additional heating.

[Traditional technique]

The simplest bath apparatus as described above is constructed as shown in FIG. 2, and is configured to reheat the bath at a set temperature as shown in FIG. 3. That is, the second
In the figure, 1 indicates a bathtub, 1a indicates a circulation fitting for the bathtub,
The circulation fitting 1a and the reheating heat exchanger 3 disposed in the appliance 2 are connected via a circulation reheating circuit consisting of a return pipe 4a and an outgoing pipe 4b, and A pump 5 and a thermistor 6 for detecting hot water temperature are installed in the heating circuit, and when the boiling water temperature is set on a remote control (not shown) and the reheating switch is turned on, the pump 5 is driven to heat the water in the bathtub. While circulating the hot water, the temperature of the hot water is detected by the thermistor 6, and if the detected hot water temperature does not reach the set temperature, the burner (not shown) of the reheating heat exchanger 3 is ignited to perform reheating. When the set temperature is reached, the reheating operation is stopped and the pump 5 is also stopped. Note that Figures 2 and 3 show the simplest examples, but in reality, the water level in the bathtub and the boiling water temperature are set on the remote control for a bath device with a water heater. When the automatic operation switch is turned on, hot water with a temperature close to the set water temperature is drawn from the water heater and poured into the bathtub. When the water level in the bathtub reaches the set water level, the pouring of hot water is automatically stopped and the pump is turned on. The system is configured to drive the heater to perform reheating operation, and to perform heat retention operation as necessary.

[Problem to be solved by the invention]

According to the method shown in FIGS. 2 and 3, even if the bathtub 1 and the fixture 2 are located far apart, the hot water in the bathtub can be reheated, and the hot water in the bathtub can be circulated by the pump. Since the bath is reheated at the same time, the hot water in the bathtub can be stirred and heated to the set temperature.

However, as shown in FIG. 2, if the bathtub 1 and the appliance 2 are installed at a distance and the thermistor 6 is installed inside the appliance 2, the circulation reheating circuit will act as a heat radiator. Even though the water temperature Tl in the bathtub has reached the set water temperature, the water temperature T2 detected by the thermistor 6 is lower by 3 minutes of the heat dissipation molecule, and as a result, the bathtub water temperature rises higher than the set water temperature. There is a problem with this.

In order to eliminate such temperature errors, a thermistor 6 is installed in the return pipe 4a of the circulation reheating circuit near the bathtub 1, as shown in FIG. 8 (or a control section within the instrument). In FIG. 4, reference numeral 9 denotes a water flow switch which detects the flow of water when the pump 5 is driven and causes the burner of the reheating heat exchanger to burn.

In this way, the temperature of the water in the bathtub can be detected accurately, but it requires electrical wiring within the bathroom.

This electrical wiring in the bathroom is undesirable because there is a risk of electrical leakage.

It is an object of the present invention to provide a hot water temperature detection method that can improve the problems of the prior art as described above and accurately detect the hot water temperature in a bathtub without requiring electrical wiring work in the bathroom. do.

[Means to solve the problem]

In order to achieve the above object, the present invention connects the inside of the bathtub and the reheating heat exchanger via a circulation reheating circuit, and circulates the hot water in the bathtub while using the reheating heat exchanger. In a bath device designed for reheating, a hot water temperature sensor for detecting the return water temperature is installed at a position near the bathtub in the return pipe of the circulation reheating circuit, and the circulating reheating circuit generates electricity using running water. A power generator and a charger capable of storing electric power are provided, and the temperature signal obtained by the hot water temperature sensor is wirelessly transmitted to the control unit using the power obtained by the power generator and charger as a power source. do.

[Effect]

As described above, the present invention includes disposing a hot water temperature sensor for detecting the returning water temperature in the return pipe of the circulation reheating circuit at a position close to the bathtub, and also generating electricity from flowing water in the circulation reheating circuit and storing the generated electric power. A power generation and charger is installed, and the power generated by the power generation and charger is used as a power source to wirelessly transmit the signal obtained by the hot water temperature sensor to the control unit, so no electrical wiring work is required in the bathroom. It is possible to accurately detect the bath water temperature and control reheating without having to worry about heating.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, 1 is a bathtub, and 1a is a circulation fitting. In this figure, the circulation fitting is shown enlarged for convenience.

2 is an appliance, 3 is a heat exchanger for reheating, 4a is a return pipe of the circulation reheating circuit, 4b is also an outgoing pipe, 5 is a pump, 8 is a remote control, and 9 is a water flow switch.

In the present invention, a thermistor 6 which is a hot water temperature detection sensor is used.
is disposed in a position close to the bathtub 1 on the return pipe 4a of the circulation reheating circuit, and a power generation/charging machine 10 capable of generating electricity with flowing water and storing the generated power is disposed in the circulation reheating circuit. Although the thermistor 6 described above must be installed on the return pipe 4a, the power generation/charging machine 10 may be installed on either the return pipe 4a side or the outgoing pipe 4b side. The machine is.

It can be as simple as rotating an impeller to generate electricity when water flows, and charging a storage battery with the generated electricity.

Then, a transmission control board 11 using the power generation/charging device 10 as a power source is provided, the transmission control board 11 and the thermistor 6 are connected, and a transmitter 12 is attached to the transmission control board 11. The signal obtained by the thermistor 6 is transmitted from the transmitting section 12 to a receiving section built into the remote control 8 (or a control section on the instrument main body side, not shown).

In addition, in FIG. 1, the thermistor 6 is used for power generation.

Charger 10. Although the transmission control board 11 and the transmitter 12 are shown separately, in reality, the thermistor 6, the transmitter control board 11, and the transmitter 12 are assembled in advance as one unit in the power generator and charger 10. This unit is connected to the return pipe 4a.
Alternatively, by disposing it on the return pipe side of the circulation fitting 1a, the assembly of the temperature detection device can be completed with just that.

As described above, the present invention includes disposing a hot water temperature sensor for detecting the returning water temperature in the return pipe 4a of the circulation reheating circuit at a position close to the bathtub, and also generates electricity using running water in the circulation reheating circuit. A storable power generation and charger 10 is installed, and the temperature signal detected by the hot water temperature sensor is transmitted wirelessly to the control unit using the electric power obtained by the power generation and charger 10 as a power source, so there is no need for electrical wiring work in the bathroom. It is possible to accurately detect the bathtub water temperature and reheat the set temperature without the need for.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to accurately detect the bathtub water temperature and reheat the set temperature without requiring electrical wiring work in the bathroom.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a configuration example of a bath device to which the method of the present invention is applied, FIG. 2 is a schematic diagram of a water system showing the configuration of a conventional bath device, and FIG. 3 is a bath device shown in FIG. 2. FIG. 4 is a schematic diagram showing another configuration example. 1... Bathtub, 2... Appliance, 3... Heat exchanger for reheating,
4a...Return pipe of circulation reheating circuit, 4b...Outgoing pipe, 5...Pump, 6...Thermistor, 8...Remote control, 9...Water switch, 10...Power generation, charger , 11
... Transmission control board, 12... Transmission unit. Patent applicant Gusta Co., Ltd. Figure 2 District 2 Odor Figure Figure

Claims (1)

[Claims] 1. In a bath device in which the bathtub and the reheating heat exchanger are connected via a circulation reheating circuit, hot water in the bathtub is circulated and reheated by the reheating heat exchanger. A hot water temperature sensor that detects the return water temperature is installed in the return pipe of the reheating circuit near the bathtub, and a power generator and charger that can generate electricity from running water and store the generated power is installed in the circulation reheating circuit. death,
A wireless bathtub water temperature detection method characterized in that a temperature signal obtained by the hot water temperature sensor is wirelessly transmitted to a control unit using electric power obtained by the power generation and charger as a power source.